Re: phylogenetic position of Achillobator, Yandangornis, etc.

["Mickey Mortimer" <mickey_mortimer@email.msn.com>]

Nick Pharris wrote-

> I imagine you could get some weird results here, as Siamotyrannus is
unlikely
> to be a coelurosaur at all.

Reasons?

> >  A surprising result is that
> >  Shanshanosaurus comes out as the sister group to all coelurosaurs
besides
> >  Deltadromeus and tyrannosaurs.
>
> Perhaps a result of size-related characters?

I personally blame the non-opisthocoelous cervicals and non-elevated femoral
head.

> >  (What are Shanshanosaurus,
>
> Primitive tyrannosaur sounds pretty good to me.

That's what I thought originally too.

> >  Bagaraatan, Yandangornis, Achillobator, Avimimus, etc), and some that
> >  haven't but probably should (What is Archaeornithoides? Does no one
else
> >  care?!).
>
> Of course I care; I just don't know.  Weird-ass troodont?  Best I can do.

With the serrationless Byronosaurus now described, that might be possible.

Mickey Mortimer